README

• Introduction
• PayPal API Credentials
• Installation
• Configuration
• Usage
  • Override PayPal API Configuration
  • Set Currency
  • Additional PayPal API Parameters
  • Express Checkout
    • SetExpressCheckout
    • GetExpressCheckoutDetails
    • DoExpressCheckoutPayment
    • RefundTransaction
    • CreateBillingAgreement
    • CreateRecurringPaymentsProfile
    • GetRecurringPaymentsProfileDetails
    • UpdateRecurringPaymentsProfile
    • ManageRecurringPaymentsProfileStatus
  • Adaptive Payments
    • Pay
• Handling PayPal IPN
• Creating Subscriptions
• Support
• PayPal Documentation

Introduction

By using this plugin you can process or refund payments and handle IPN (Instant Payment Notification) from PayPal in your Laravel application.

Currently only PayPal Express Checkout API Is Supported.

I have also created a demo application which utilizes this package. Following is the demo link for the application:

https://laravel-paypal-demo.srmk.info/

PayPal API Credentials

This package uses the classic paypal express checkout. Refer to this link on how to create API credentials:

https://developer.paypal.com/docs/classic/api/apiCredentials/#create-an-api-signature

Installation

• Use following command to install:

composer require srmklive/paypal:~1.0

• Add the service provider to your $providers array in config/app.php file like:

Srmklive\PayPal\Providers\PayPalServiceProvider::class

• Add the alias to your $aliases array in config/app.php file like:

'PayPal' => Srmklive\PayPal\Facades\PayPal::class

• Run the following command to publish configuration:

php artisan vendor:publish --provider "Srmklive\PayPal\Providers\PayPalServiceProvider"

Configuration

• After installation, you will need to add your paypal settings. Following is the code you will find in config/paypal.php, which you should update accordingly.

return [
    'mode' => 'sandbox',        // Can only be 'sandbox' Or 'live'. If empty or invalid, 'live' will be used.
    'sandbox' => [
        'username' => '',       // Api Username
        'password' => '',       // Api Password
        'secret' => '',         // This refers to api signature
        'certificate' => '',    // Link to paypals cert file, storage_path('cert_key_pem.txt')
    ],
    'live' => [
        'username' => '',       // Api Username
        'password' => '',       // Api Password
        'secret' => '',         // This refers to api signature
        'certificate' => '',    // Link to paypals cert file, storage_path('cert_key_pem.txt')
    ],
    'payment_action' => 'Sale', // Can Only Be 'Sale', 'Authorization', 'Order'
    'currency' => 'USD',
    'notify_url' => '',         // Change this accordingly for your application.
    'validate_ssl' => true,     // Validate SSL when creating api client.
];

Usage

Following are some ways through which you can access the paypal provider:

// Import the class namespaces first, before using it directly
use Srmklive\PayPal\Services\ExpressCheckout;
use Srmklive\PayPal\Services\AdaptivePayments;

$provider = new ExpressCheckout;      // To use express checkout.
$provider = new AdaptivePayments;     // To use adaptive payments.

// Through facade. No need to import namespaces
$provider = PayPal::setProvider('express_checkout');      // To use express checkout(used by default).
$provider = PayPal::setProvider('adaptive_payments');     // To use adaptive payments.

Override PayPal API Configuration

You can override PayPal API configuration by calling setApiCredentials method:

$provider->setApiCredentials($config);

Set Currency

By default the currency used is USD. If you wish to change it, you may call setCurrency method to set a different currency before calling any respective API methods:

$provider->setCurrency('EUR')->setExpressCheckout($data);

Additional PayPal API Parameters

By default only a specific set of parameters are used for PayPal API calls. However, if you wish specify any other additional parameters you may call the addOptions method before calling any respective API methods:

$options = [
    'BRANDNAME' => 'MyBrand',
    'LOGOIMG' => 'https://example.com/mylogo.png',
    'CHANNELTYPE' => 'Merchant'
];

$provider->addOptions($options)->setExpressCheckout($data);

Warning: Any parameters should be referenced accordingly to the API call you will perform. For example, if you are performing SetExpressCheckout, then you must provide the parameters as documented by PayPal for SetExpressCheckout to addOptions method.

Express Checkout

$data = [];
$data['items'] = [
    [
        'name' => 'Product 1',
        'price' => 9.99,
        'qty' => 1
    ],
    [
        'name' => 'Product 2',
        'price' => 4.99,
        'qty' => 2
    ]
];

$data['invoice_id'] = 1;
$data['invoice_description'] = "Order #{$data[invoice_id]} Invoice";
$data['return_url'] = url('/payment/success');
$data['cancel_url'] = url('/cart');

$total = 0;
foreach($data['items'] as $item) {
    $total += $item['price']*$item['qty'];
}

$data['total'] = $total;

• SetExpressCheckout

  $response = $provider->setExpressCheckout($data);
  
  // Use the following line when creating recurring payment profiles (subscriptions)
  $response = $provider->setExpressCheckout($data, true);
  
   // This will redirect user to PayPal
  return redirect($response['paypal_link']);

• GetExpressCheckoutDetails

  $response = $provider->getExpressCheckoutDetails($token);

• DoExpressCheckoutPayment

  // Note that 'token', 'PayerID' are values returned by PayPal when it redirects to success page after successful verification of user's PayPal info.
  $response = $provider->doExpressCheckoutPayment($data, $token, $PayerID);

• RefundTransaction

  $response = $provider->refundTransaction($transactionid);
  
  // To issue partial refund, you must provide the amount as well for refund:
  $response = $provider->refundTransaction($transactionid, 9.99);      

• CreateBillingAgreement

  // The $token is the value returned from SetExpressCheckout API call
  $response = $provider->createBillingAgreement($token);

• CreateRecurringPaymentsProfile

  // The $token is the value returned from SetExpressCheckout API call
  $startdate = Carbon::now()->toAtomString();
  $profile_desc = !empty($data['subscription_desc']) ?
              $data['subscription_desc'] : $data['invoice_description'];
  $data = [
      'PROFILESTARTDATE' => $startdate,
      'DESC' => $profile_desc,
      'BILLINGPERIOD' => 'Month', // Can be 'Day', 'Week', 'SemiMonth', 'Month', 'Year'
      'BILLINGFREQUENCY' => 1, // 
      'AMT' => 10, // Billing amount for each billing cycle
      'CURRENCYCODE' => 'USD', // Currency code 
      'TRIALBILLINGPERIOD' => 'Day',  // (Optional) Can be 'Day', 'Week', 'SemiMonth', 'Month', 'Year'
      'TRIALBILLINGFREQUENCY' => 10, // (Optional) set 12 for monthly, 52 for yearly 
      'TRIALTOTALBILLINGCYCLES' => 1, // (Optional) Change it accordingly
      'TRIALAMT' => 0, // (Optional) Change it accordingly
  ];
  $response = $provider->createRecurringPaymentsProfile($data, $token);

• GetRecurringPaymentsProfileDetails

  $response = $provider->getRecurringPaymentsProfileDetails($profileid);

• UpdateRecurringPaymentsProfile

  $response = $provider->updateRecurringPaymentsProfile($data, $profileid);

• ManageRecurringPaymentsProfileStatus

  // Cancel recurring payment profile
  $response = $provider->cancelRecurringPaymentsProfile($profileid);
  
  // Suspend recurring payment profile
  $response = $provider->suspendRecurringPaymentsProfile($profileid);
  
  // Reactivate recurring payment profile
  $response = $provider->reactivateRecurringPaymentsProfile($profileid);    

Adaptive Payments

To use adaptive payments, you must set the provider to use Adaptive Payments:

PayPal::setProvider('adaptive_payments');

• Pay

// Change the values accordingly for your application
$data = [
    'receivers'  => [
        [
            'email' => 'johndoe@example.com',
            'amount' => 10,
            'primary' => true,
        ],
        [
            'email' => 'janedoe@example.com',
            'amount' => 5,
            'primary' => false
        ]
    ],
    'payer' => 'EACHRECEIVER', // (Optional) Describes who pays PayPal fees. Allowed values are: 'SENDER', 'PRIMARYRECEIVER', 'EACHRECEIVER' (Default), 'SECONDARYONLY'
    'return_url' => url('payment/success'), 
    'cancel_url' => url('payment/cancel'),
];

$response = $provider->createPayRequest($data);

// The above API call will return the following values if successful:
// 'responseEnvelope.ack', 'payKey', 'paymentExecStatus'

Next, you need to redirect the user to PayPal to authorize the payment

$redirect_url = $provider->getRedirectUrl('approved', $response['payKey']);

return redirect($redirect_url);

Handling PayPal IPN

You can also handle Instant Payment Notifications from PayPal. Suppose you have set IPN URL to http://example.com/ipn/notify/ in PayPal. To handle IPN you should do the following:

• First add the ipn/notify tp your routes file:

  Route::post('ipn/notify','PayPalController@postNotify'); // Change it accordingly in your application

• Open App\Http\Middleware\VerifyCsrfToken.php and add your IPN route to $excluded routes variable.

  'ipn/notify'

• Write the following code in the function where you will parse IPN response:

  /**
   * Retrieve IPN Response From PayPal
   *
   * @param \Illuminate\Http\Request $request
   */
  public function postNotify(Request $request)
  {
      // Import the namespace Srmklive\PayPal\Services\ExpressCheckout first in your controller.
      $provider = new ExpressCheckout;
      
      $request->merge(['cmd' => '_notify-validate']);
      $post = $request->all();        
      
      $response = (string) $provider->verifyIPN($post);
      
      if ($response === 'VERIFIED') {                      
          // Your code goes here ...
      }                            
  }        

Create Subscriptions

• For example, you want to create a recurring subscriptions on paypal, first pass data to SetExpressCheckout API call in following format:

// Always update the code below accordingly to your own requirements.
$data = [];

$data['items'] = [
    [
        'name'  => "Monthly Subscription",
        'price' => 0,
        'qty'   => 1,
    ],
];

$data['subscription_desc'] = "Monthly Subscription #1";
$data['invoice_id'] = 1;
$data['invoice_description'] = "Monthly Subscription #1";
$data['return_url'] = url('/paypal/ec-checkout-success?mode=recurring');
$data['cancel_url'] = url('/');

$total = 0;
foreach ($data['items'] as $item) {
    $total += $item['price'] * $item['qty'];
}

$data['total'] = $total;

• Next perform the remaining steps listed in SetExpressCheckout.
• Next perform the exact steps listed in GetExpressCheckoutDetails.
• Finally do the following for CreateRecurringPaymentsProfile

$amount = 9.99;
$description = "Monthly Subscription #1";
$response = $provider->createMonthlySubscription($token, $amount, $description);

// To create recurring yearly subscription on PayPal
$response = $provider->createYearlySubscription($token, $amount, $description);

Support

This plugin only supports Laravel 5.1 or greater.

• In case of any issues, kindly create one on the Issues section.
• If you would like to contribute:
  • Fork this repository.
  • Implement your features.
  • Generate pull request.